 |
» |
|
|
|
The user interface consists of a main form which is a single
table. The rows of the table contain all the fields of the employee
record. All the fields are protected (i.e., display-only).
Seven function keys are defined: SELECT, which causes display of a popup form asking for the
department number. This popup form itself has two function keys:
OK and CANCEL. CANCEL cancels the SELECT and makes the
popup form disappear. OK selects the employees in the specified
department and displays the rows in the main form after the popup form
disappears.
CURSOR_UP and CURSOR_DOWN, which position the cursor on the
desired row in the table.
PAGE_UP and PAGE_DOWN, which position the display table on the
previous or next page of rows.
DELETE, which deletes the current row. The row disappears from the
table, and all the following rows are shifted up by one. A new row fills in
the bottom of the table on the screen.
UPDATE, which causes display of a popup form asking for the new
values for the row. The popup form itself has two function keys:
OK and CANCEL. CANCEL cancels the UPDATE and makes the
popup form disappear. OK updates the employee specified
and displays the rows in the main form after the popup form
disappears. If the department number has not been changed, the new
value of the row is displayed under the cursor; otherwise, the screen is
handled as in the case of deletions.
|
